A true-crime companion book to the television series of the same name. I’ve re-examined 10 cases featured in the documentaries, which are shown on CBS Reality. These are extraordinary investigations from around Britain’s coastal resorts, ranging from the hunt for Pembrokeshire serial killer John Cooper, back to 1953 and the unmasking of Blackpool Poisoner Louisa Merrifield. Co-author David Howard is the series’ director and he conducted the interviews on which the book is based, including former detectives, criminologists, victims’ relatives and barristers. We do love to be beside the seaside, but away from the sunny beaches and fun fairs are some dark secrets.